package com.example.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.reggie.dto.DishDto;
import com.example.reggie.entity.Dish;
import com.example.reggie.entity.DishFlavor;
import com.example.reggie.mapper.DishMapper;
import com.example.reggie.service.DishFlavorService;
import com.example.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    /**
     * 新增菜品，同时保存对应口味数据
     * @param dishDto
     */
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);

        Long dishId = dishDto.getId();

        //菜品口味
        List<DishFlavor> flavors=dishDto.getFlavors();
        for (DishFlavor dishFlavor:flavors
             ) {
            dishFlavor.setDishId(dishId);
        }

        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);
        //dishFlavorService.saveBatch(dishDto.getFlavors());
    }

    /**
     * 根据id查询产品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查
        Dish dish=this.getById(id);

        DishDto dishDto=new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavorList=dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavorList);

        return dishDto;
    }

    /**
     * 更新菜品系信息，同时更新口味信息
     * @param dishDto
     */
    @Override
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据 ---dish_flavor 表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味数据 ---dish_flavor表的insert操作
        Long dishId=dishDto.getId();
        List<DishFlavor> flavors=dishDto.getFlavors();
        for (DishFlavor dishFlavor:flavors
        ) {
            dishFlavor.setDishId(dishId);
        }
        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);


    }

    /**
     * 根据id删除菜品信息
     * @param ids
     */
    @Transactional
    @Override
    public void delete(Long ids) {
        //清理dish表基本信息
        this.removeById(ids);

        //清理当前菜品对应口味数据 ---dish_flavor 表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper=new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,ids);
        dishFlavorService.remove(queryWrapper);


    }


}
